forked from torvalds/linux
-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathlpfc_nportdisc.c
2299 lines (2021 loc) · 68.5 KB
/
lpfc_nportdisc.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
/*******************************************************************
* This file is part of the Emulex Linux Device Driver for *
* Fibre Channel Host Bus Adapters. *
* Copyright (C) 2004-2009 Emulex. All rights reserved. *
* EMULEX and SLI are trademarks of Emulex. *
* www.emulex.com *
* Portions Copyright (C) 2004-2005 Christoph Hellwig *
* *
* This program is free software; you can redistribute it and/or *
* modify it under the terms of version 2 of the GNU General *
* Public License as published by the Free Software Foundation. *
* This program is distributed in the hope that it will be useful. *
* ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND *
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, *
* FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE *
* DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD *
* TO BE LEGALLY INVALID. See the GNU General Public License for *
* more details, a copy of which can be found in the file COPYING *
* included with this package. *
*******************************************************************/
#include <linux/blkdev.h>
#include <linux/pci.h>
#include <linux/slab.h>
#include <linux/interrupt.h>
#include <scsi/scsi.h>
#include <scsi/scsi_device.h>
#include <scsi/scsi_host.h>
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw4.h"
#include "lpfc_hw.h"
#include "lpfc_sli.h"
#include "lpfc_sli4.h"
#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
#include "lpfc_logmsg.h"
#include "lpfc_crtn.h"
#include "lpfc_vport.h"
#include "lpfc_debugfs.h"
/* Called to verify a rcv'ed ADISC was intended for us. */
static int
lpfc_check_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_name *nn, struct lpfc_name *pn)
{
/* Compare the ADISC rsp WWNN / WWPN matches our internal node
* table entry for that node.
*/
if (memcmp(nn, &ndlp->nlp_nodename, sizeof (struct lpfc_name)))
return 0;
if (memcmp(pn, &ndlp->nlp_portname, sizeof (struct lpfc_name)))
return 0;
/* we match, return success */
return 1;
}
int
lpfc_check_sparm(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct serv_parm *sp, uint32_t class, int flogi)
{
volatile struct serv_parm *hsp = &vport->fc_sparam;
uint16_t hsp_value, ssp_value = 0;
/*
* The receive data field size and buffer-to-buffer receive data field
* size entries are 16 bits but are represented as two 8-bit fields in
* the driver data structure to account for rsvd bits and other control
* bits. Reconstruct and compare the fields as a 16-bit values before
* correcting the byte values.
*/
if (sp->cls1.classValid) {
if (!flogi) {
hsp_value = ((hsp->cls1.rcvDataSizeMsb << 8) |
hsp->cls1.rcvDataSizeLsb);
ssp_value = ((sp->cls1.rcvDataSizeMsb << 8) |
sp->cls1.rcvDataSizeLsb);
if (!ssp_value)
goto bad_service_param;
if (ssp_value > hsp_value) {
sp->cls1.rcvDataSizeLsb =
hsp->cls1.rcvDataSizeLsb;
sp->cls1.rcvDataSizeMsb =
hsp->cls1.rcvDataSizeMsb;
}
}
} else if (class == CLASS1)
goto bad_service_param;
if (sp->cls2.classValid) {
if (!flogi) {
hsp_value = ((hsp->cls2.rcvDataSizeMsb << 8) |
hsp->cls2.rcvDataSizeLsb);
ssp_value = ((sp->cls2.rcvDataSizeMsb << 8) |
sp->cls2.rcvDataSizeLsb);
if (!ssp_value)
goto bad_service_param;
if (ssp_value > hsp_value) {
sp->cls2.rcvDataSizeLsb =
hsp->cls2.rcvDataSizeLsb;
sp->cls2.rcvDataSizeMsb =
hsp->cls2.rcvDataSizeMsb;
}
}
} else if (class == CLASS2)
goto bad_service_param;
if (sp->cls3.classValid) {
if (!flogi) {
hsp_value = ((hsp->cls3.rcvDataSizeMsb << 8) |
hsp->cls3.rcvDataSizeLsb);
ssp_value = ((sp->cls3.rcvDataSizeMsb << 8) |
sp->cls3.rcvDataSizeLsb);
if (!ssp_value)
goto bad_service_param;
if (ssp_value > hsp_value) {
sp->cls3.rcvDataSizeLsb =
hsp->cls3.rcvDataSizeLsb;
sp->cls3.rcvDataSizeMsb =
hsp->cls3.rcvDataSizeMsb;
}
}
} else if (class == CLASS3)
goto bad_service_param;
/*
* Preserve the upper four bits of the MSB from the PLOGI response.
* These bits contain the Buffer-to-Buffer State Change Number
* from the target and need to be passed to the FW.
*/
hsp_value = (hsp->cmn.bbRcvSizeMsb << 8) | hsp->cmn.bbRcvSizeLsb;
ssp_value = (sp->cmn.bbRcvSizeMsb << 8) | sp->cmn.bbRcvSizeLsb;
if (ssp_value > hsp_value) {
sp->cmn.bbRcvSizeLsb = hsp->cmn.bbRcvSizeLsb;
sp->cmn.bbRcvSizeMsb = (sp->cmn.bbRcvSizeMsb & 0xF0) |
(hsp->cmn.bbRcvSizeMsb & 0x0F);
}
memcpy(&ndlp->nlp_nodename, &sp->nodeName, sizeof (struct lpfc_name));
memcpy(&ndlp->nlp_portname, &sp->portName, sizeof (struct lpfc_name));
return 1;
bad_service_param:
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0207 Device %x "
"(%02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x) sent "
"invalid service parameters. Ignoring device.\n",
ndlp->nlp_DID,
sp->nodeName.u.wwn[0], sp->nodeName.u.wwn[1],
sp->nodeName.u.wwn[2], sp->nodeName.u.wwn[3],
sp->nodeName.u.wwn[4], sp->nodeName.u.wwn[5],
sp->nodeName.u.wwn[6], sp->nodeName.u.wwn[7]);
return 0;
}
static void *
lpfc_check_elscmpl_iocb(struct lpfc_hba *phba, struct lpfc_iocbq *cmdiocb,
struct lpfc_iocbq *rspiocb)
{
struct lpfc_dmabuf *pcmd, *prsp;
uint32_t *lp;
void *ptr = NULL;
IOCB_t *irsp;
irsp = &rspiocb->iocb;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
/* For lpfc_els_abort, context2 could be zero'ed to delay
* freeing associated memory till after ABTS completes.
*/
if (pcmd) {
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf,
list);
if (prsp) {
lp = (uint32_t *) prsp->virt;
ptr = (void *)((uint8_t *)lp + sizeof(uint32_t));
}
} else {
/* Force ulpStatus error since we are returning NULL ptr */
if (!(irsp->ulpStatus)) {
irsp->ulpStatus = IOSTAT_LOCAL_REJECT;
irsp->un.ulpWord[4] = IOERR_SLI_ABORTED;
}
ptr = NULL;
}
return ptr;
}
/*
* Free resources / clean up outstanding I/Os
* associated with a LPFC_NODELIST entry. This
* routine effectively results in a "software abort".
*/
int
lpfc_els_abort(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp)
{
LIST_HEAD(completions);
LIST_HEAD(txcmplq_completions);
LIST_HEAD(abort_list);
struct lpfc_sli *psli = &phba->sli;
struct lpfc_sli_ring *pring = &psli->ring[LPFC_ELS_RING];
struct lpfc_iocbq *iocb, *next_iocb;
/* Abort outstanding I/O on NPort <nlp_DID> */
lpfc_printf_vlog(ndlp->vport, KERN_INFO, LOG_DISCOVERY,
"2819 Abort outstanding I/O on NPort x%x "
"Data: x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_flag, ndlp->nlp_state,
ndlp->nlp_rpi);
lpfc_fabric_abort_nport(ndlp);
/* First check the txq */
spin_lock_irq(&phba->hbalock);
list_for_each_entry_safe(iocb, next_iocb, &pring->txq, list) {
/* Check to see if iocb matches the nport we are looking for */
if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp)) {
/* It matches, so deque and call compl with anp error */
list_move_tail(&iocb->list, &completions);
pring->txq_cnt--;
}
}
/* Next check the txcmplq */
list_splice_init(&pring->txcmplq, &txcmplq_completions);
spin_unlock_irq(&phba->hbalock);
list_for_each_entry_safe(iocb, next_iocb, &txcmplq_completions, list) {
/* Check to see if iocb matches the nport we are looking for */
if (lpfc_check_sli_ndlp(phba, pring, iocb, ndlp))
list_add_tail(&iocb->dlist, &abort_list);
}
spin_lock_irq(&phba->hbalock);
list_splice(&txcmplq_completions, &pring->txcmplq);
spin_unlock_irq(&phba->hbalock);
list_for_each_entry_safe(iocb, next_iocb, &abort_list, dlist) {
spin_lock_irq(&phba->hbalock);
list_del_init(&iocb->dlist);
lpfc_sli_issue_abort_iotag(phba, pring, iocb);
spin_unlock_irq(&phba->hbalock);
}
/* Cancel all the IOCBs from the completions list */
lpfc_sli_cancel_iocbs(phba, &completions, IOSTAT_LOCAL_REJECT,
IOERR_SLI_ABORTED);
lpfc_cancel_retry_delay_tmo(phba->pport, ndlp);
return 0;
}
static int
lpfc_rcv_plogi(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
IOCB_t *icmd;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
struct ls_rjt stat;
int rc;
memset(&stat, 0, sizeof (struct ls_rjt));
if (vport->port_state <= LPFC_FDISC) {
/* Before responding to PLOGI, check for pt2pt mode.
* If we are pt2pt, with an outstanding FLOGI, abort
* the FLOGI and resend it first.
*/
if (vport->fc_flag & FC_PT2PT) {
lpfc_els_abort_flogi(phba);
if (!(vport->fc_flag & FC_PT2PT_PLOGI)) {
/* If the other side is supposed to initiate
* the PLOGI anyway, just ACC it now and
* move on with discovery.
*/
phba->fc_edtov = FF_DEF_EDTOV;
phba->fc_ratov = FF_DEF_RATOV;
/* Start discovery - this should just do
CLEAR_LA */
lpfc_disc_start(vport);
} else
lpfc_initial_flogi(vport);
} else {
stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
ndlp, NULL);
return 0;
}
}
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
if (wwn_to_u64(sp->portName.u.wwn) == 0) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0140 PLOGI Reject: invalid nname\n");
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_PNAME;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
return 0;
}
if (wwn_to_u64(sp->nodeName.u.wwn) == 0) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0141 PLOGI Reject: invalid pname\n");
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_INVALID_NNAME;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
return 0;
}
if ((lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0) == 0)) {
/* Reject this request because invalid parameters */
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
return 0;
}
icmd = &cmdiocb->iocb;
/* PLOGI chkparm OK */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0114 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_state, ndlp->nlp_flag,
ndlp->nlp_rpi);
if (vport->cfg_fcp_class == 2 && sp->cls2.classValid)
ndlp->nlp_fcp_info |= CLASS2;
else
ndlp->nlp_fcp_info |= CLASS3;
ndlp->nlp_class_sup = 0;
if (sp->cls1.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS1;
if (sp->cls2.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS2;
if (sp->cls3.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS3;
if (sp->cls4.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS4;
ndlp->nlp_maxframe =
((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
/* no need to reg_login if we are already in one of these states */
switch (ndlp->nlp_state) {
case NLP_STE_NPR_NODE:
if (!(ndlp->nlp_flag & NLP_NPR_ADISC))
break;
case NLP_STE_REG_LOGIN_ISSUE:
case NLP_STE_PRLI_ISSUE:
case NLP_STE_UNMAPPED_NODE:
case NLP_STE_MAPPED_NODE:
lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, NULL);
return 1;
}
if ((vport->fc_flag & FC_PT2PT) &&
!(vport->fc_flag & FC_PT2PT_PLOGI)) {
/* rcv'ed PLOGI decides what our NPortId will be */
vport->fc_myDID = icmd->un.rcvels.parmRo;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (mbox == NULL)
goto out;
lpfc_config_link(phba, mbox);
mbox->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
mbox->vport = vport;
rc = lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED) {
mempool_free(mbox, phba->mbox_mem_pool);
goto out;
}
lpfc_can_disctmo(vport);
}
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox)
goto out;
rc = lpfc_reg_rpi(phba, vport->vpi, icmd->un.rcvels.remoteID,
(uint8_t *) sp, mbox, ndlp->nlp_rpi);
if (rc) {
mempool_free(mbox, phba->mbox_mem_pool);
goto out;
}
/* ACC PLOGI rsp command needs to execute first,
* queue this mbox command to be processed later.
*/
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
/*
* mbox->context2 = lpfc_nlp_get(ndlp) deferred until mailbox
* command issued in lpfc_cmpl_els_acc().
*/
mbox->vport = vport;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= (NLP_ACC_REGLOGIN | NLP_RCV_PLOGI);
spin_unlock_irq(shost->host_lock);
/*
* If there is an outstanding PLOGI issued, abort it before
* sending ACC rsp for received PLOGI. If pending plogi
* is not canceled here, the plogi will be rejected by
* remote port and will be retried. On a configuration with
* single discovery thread, this will cause a huge delay in
* discovery. Also this will cause multiple state machines
* running in parallel for this node.
*/
if (ndlp->nlp_state == NLP_STE_PLOGI_ISSUE) {
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp);
}
if ((vport->port_type == LPFC_NPIV_PORT &&
vport->cfg_restrict_login)) {
/* In order to preserve RPIs, we want to cleanup
* the default RPI the firmware created to rcv
* this ELS request. The only way to do this is
* to register, then unregister the RPI.
*/
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_RM_DFLT_RPI;
spin_unlock_irq(shost->host_lock);
stat.un.b.lsRjtRsnCode = LSRJT_INVALID_CMD;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb,
ndlp, mbox);
return 1;
}
lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp, mbox);
return 1;
out:
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_OUT_OF_RESOURCE;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return 0;
}
static int
lpfc_rcv_padisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_dmabuf *pcmd;
struct serv_parm *sp;
struct lpfc_name *pnn, *ppn;
struct ls_rjt stat;
ADISC *ap;
IOCB_t *icmd;
uint32_t *lp;
uint32_t cmd;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
cmd = *lp++;
if (cmd == ELS_CMD_ADISC) {
ap = (ADISC *) lp;
pnn = (struct lpfc_name *) & ap->nodeName;
ppn = (struct lpfc_name *) & ap->portName;
} else {
sp = (struct serv_parm *) lp;
pnn = (struct lpfc_name *) & sp->nodeName;
ppn = (struct lpfc_name *) & sp->portName;
}
icmd = &cmdiocb->iocb;
if (icmd->ulpStatus == 0 && lpfc_check_adisc(vport, ndlp, pnn, ppn)) {
if (cmd == ELS_CMD_ADISC) {
lpfc_els_rsp_adisc_acc(vport, cmdiocb, ndlp);
} else {
lpfc_els_rsp_acc(vport, ELS_CMD_PLOGI, cmdiocb, ndlp,
NULL);
}
return 1;
}
/* Reject this request because invalid parameters */
stat.un.b.lsRjtRsvd0 = 0;
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_SPARM_OPTIONS;
stat.un.b.vendorUnique = 0;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
/* 1 sec timeout */
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
return 0;
}
static int
lpfc_rcv_logo(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb, uint32_t els_cmd)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_vport **vports;
int i, active_vlink_present = 0 ;
/* Put ndlp in NPR state with 1 sec timeout for plogi, ACC logo */
/* Only call LOGO ACC for first LOGO, this avoids sending unnecessary
* PLOGIs during LOGO storms from a device.
*/
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_ACC;
spin_unlock_irq(shost->host_lock);
if (els_cmd == ELS_CMD_PRLO)
lpfc_els_rsp_acc(vport, ELS_CMD_PRLO, cmdiocb, ndlp, NULL);
else
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
if (ndlp->nlp_DID == Fabric_DID) {
if (vport->port_state <= LPFC_FDISC)
goto out;
lpfc_linkdown_port(vport);
spin_lock_irq(shost->host_lock);
vport->fc_flag |= FC_VPORT_LOGO_RCVD;
spin_unlock_irq(shost->host_lock);
vports = lpfc_create_vport_work_array(phba);
if (vports) {
for (i = 0; i <= phba->max_vports && vports[i] != NULL;
i++) {
if ((!(vports[i]->fc_flag &
FC_VPORT_LOGO_RCVD)) &&
(vports[i]->port_state > LPFC_FDISC)) {
active_vlink_present = 1;
break;
}
}
lpfc_destroy_vport_work_array(phba, vports);
}
if (active_vlink_present) {
/*
* If there are other active VLinks present,
* re-instantiate the Vlink using FDISC.
*/
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = ELS_CMD_FDISC;
vport->port_state = LPFC_FDISC;
} else {
spin_lock_irq(shost->host_lock);
phba->pport->fc_flag &= ~FC_LOGO_RCVD_DID_CHNG;
spin_unlock_irq(shost->host_lock);
lpfc_retry_pport_discovery(phba);
}
} else if ((!(ndlp->nlp_type & NLP_FABRIC) &&
((ndlp->nlp_type & NLP_FCP_TARGET) ||
!(ndlp->nlp_type & NLP_FCP_INITIATOR))) ||
(ndlp->nlp_state == NLP_STE_ADISC_ISSUE)) {
/* Only try to re-login if this is NOT a Fabric Node */
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
}
out:
ndlp->nlp_prev_state = ndlp->nlp_state;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
spin_unlock_irq(shost->host_lock);
/* The driver has to wait until the ACC completes before it continues
* processing the LOGO. The action will resume in
* lpfc_cmpl_els_logo_acc routine. Since part of processing includes an
* unreg_login, the driver waits so the ACC does not get aborted.
*/
return 0;
}
static void
lpfc_rcv_prli(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
struct lpfc_iocbq *cmdiocb)
{
struct lpfc_dmabuf *pcmd;
uint32_t *lp;
PRLI *npr;
struct fc_rport *rport = ndlp->rport;
u32 roles;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
lp = (uint32_t *) pcmd->virt;
npr = (PRLI *) ((uint8_t *) lp + sizeof (uint32_t));
ndlp->nlp_type &= ~(NLP_FCP_TARGET | NLP_FCP_INITIATOR);
ndlp->nlp_fcp_info &= ~NLP_FCP_2_DEVICE;
if (npr->prliType == PRLI_FCP_TYPE) {
if (npr->initiatorFunc)
ndlp->nlp_type |= NLP_FCP_INITIATOR;
if (npr->targetFunc)
ndlp->nlp_type |= NLP_FCP_TARGET;
if (npr->Retry)
ndlp->nlp_fcp_info |= NLP_FCP_2_DEVICE;
}
if (rport) {
/* We need to update the rport role values */
roles = FC_RPORT_ROLE_UNKNOWN;
if (ndlp->nlp_type & NLP_FCP_INITIATOR)
roles |= FC_RPORT_ROLE_FCP_INITIATOR;
if (ndlp->nlp_type & NLP_FCP_TARGET)
roles |= FC_RPORT_ROLE_FCP_TARGET;
lpfc_debugfs_disc_trc(vport, LPFC_DISC_TRC_RPORT,
"rport rolechg: role:x%x did:x%x flg:x%x",
roles, ndlp->nlp_DID, ndlp->nlp_flag);
fc_remote_port_rolechg(rport, roles);
}
}
static uint32_t
lpfc_disc_set_adisc(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
if (!(ndlp->nlp_flag & NLP_RPI_REGISTERED)) {
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
return 0;
}
if (!(vport->fc_flag & FC_PT2PT)) {
/* Check config parameter use-adisc or FCP-2 */
if ((vport->cfg_use_adisc && (vport->fc_flag & FC_RSCN_MODE)) ||
((ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) &&
(ndlp->nlp_type & NLP_FCP_TARGET))) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_NPR_ADISC;
spin_unlock_irq(shost->host_lock);
return 1;
}
}
ndlp->nlp_flag &= ~NLP_NPR_ADISC;
lpfc_unreg_rpi(vport, ndlp);
return 0;
}
/**
* lpfc_release_rpi - Release a RPI by issuing unreg_login mailbox cmd.
* @phba : Pointer to lpfc_hba structure.
* @vport: Pointer to lpfc_vport structure.
* @rpi : rpi to be release.
*
* This function will send a unreg_login mailbox command to the firmware
* to release a rpi.
**/
void
lpfc_release_rpi(struct lpfc_hba *phba,
struct lpfc_vport *vport,
uint16_t rpi)
{
LPFC_MBOXQ_t *pmb;
int rc;
pmb = (LPFC_MBOXQ_t *) mempool_alloc(phba->mbox_mem_pool,
GFP_KERNEL);
if (!pmb)
lpfc_printf_vlog(vport, KERN_ERR, LOG_MBOX,
"2796 mailbox memory allocation failed \n");
else {
lpfc_unreg_login(phba, vport->vpi, rpi, pmb);
pmb->mbox_cmpl = lpfc_sli_def_mbox_cmpl;
rc = lpfc_sli_issue_mbox(phba, pmb, MBX_NOWAIT);
if (rc == MBX_NOT_FINISHED)
mempool_free(pmb, phba->mbox_mem_pool);
}
}
static uint32_t
lpfc_disc_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct lpfc_hba *phba;
LPFC_MBOXQ_t *pmb = (LPFC_MBOXQ_t *) arg;
MAILBOX_t *mb;
uint16_t rpi;
phba = vport->phba;
/* Release the RPI if reglogin completing */
if (!(phba->pport->load_flag & FC_UNLOADING) &&
(evt == NLP_EVT_CMPL_REG_LOGIN) &&
(!pmb->u.mb.mbxStatus)) {
mb = &pmb->u.mb;
rpi = pmb->u.mb.un.varWords[0];
lpfc_release_rpi(phba, vport, rpi);
}
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0271 Illegal State Transition: node x%x "
"event x%x, state x%x Data: x%x x%x\n",
ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
ndlp->nlp_flag);
return ndlp->nlp_state;
}
static uint32_t
lpfc_cmpl_plogi_illegal(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
/* This transition is only legal if we previously
* rcv'ed a PLOGI. Since we don't want 2 discovery threads
* working on the same NPortID, do nothing for this thread
* to stop it.
*/
if (!(ndlp->nlp_flag & NLP_RCV_PLOGI)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_DISCOVERY,
"0272 Illegal State Transition: node x%x "
"event x%x, state x%x Data: x%x x%x\n",
ndlp->nlp_DID, evt, ndlp->nlp_state, ndlp->nlp_rpi,
ndlp->nlp_flag);
}
return ndlp->nlp_state;
}
/* Start of Discovery State Machine routines */
static uint32_t
lpfc_rcv_plogi_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb;
cmdiocb = (struct lpfc_iocbq *) arg;
if (lpfc_rcv_plogi(vport, ndlp, cmdiocb)) {
return ndlp->nlp_state;
}
return NLP_STE_FREED_NODE;
}
static uint32_t
lpfc_rcv_els_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
lpfc_issue_els_logo(vport, ndlp, 0);
return ndlp->nlp_state;
}
static uint32_t
lpfc_rcv_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_LOGO_ACC;
spin_unlock_irq(shost->host_lock);
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
return ndlp->nlp_state;
}
static uint32_t
lpfc_cmpl_logo_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
return NLP_STE_FREED_NODE;
}
static uint32_t
lpfc_device_rm_unused_node(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
return NLP_STE_FREED_NODE;
}
static uint32_t
lpfc_rcv_plogi_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *cmdiocb = arg;
struct lpfc_dmabuf *pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
uint32_t *lp = (uint32_t *) pcmd->virt;
struct serv_parm *sp = (struct serv_parm *) (lp + 1);
struct ls_rjt stat;
int port_cmp;
memset(&stat, 0, sizeof (struct ls_rjt));
/* For a PLOGI, we only accept if our portname is less
* than the remote portname.
*/
phba->fc_stat.elsLogiCol++;
port_cmp = memcmp(&vport->fc_portname, &sp->portName,
sizeof(struct lpfc_name));
if (port_cmp >= 0) {
/* Reject this request because the remote node will accept
ours */
stat.un.b.lsRjtRsnCode = LSRJT_UNABLE_TPC;
stat.un.b.lsRjtRsnCodeExp = LSEXP_CMD_IN_PROGRESS;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp,
NULL);
} else {
if (lpfc_rcv_plogi(vport, ndlp, cmdiocb) &&
(ndlp->nlp_flag & NLP_NPR_2B_DISC) &&
(vport->num_disc_nodes)) {
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag &= ~NLP_NPR_2B_DISC;
spin_unlock_irq(shost->host_lock);
/* Check if there are more PLOGIs to be sent */
lpfc_more_plogi(vport);
if (vport->num_disc_nodes == 0) {
spin_lock_irq(shost->host_lock);
vport->fc_flag &= ~FC_NDISC_ACTIVE;
spin_unlock_irq(shost->host_lock);
lpfc_can_disctmo(vport);
lpfc_end_rscn(vport);
}
}
} /* If our portname was less */
return ndlp->nlp_state;
}
static uint32_t
lpfc_rcv_prli_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
struct ls_rjt stat;
memset(&stat, 0, sizeof (struct ls_rjt));
stat.un.b.lsRjtRsnCode = LSRJT_LOGICAL_BSY;
stat.un.b.lsRjtRsnCodeExp = LSEXP_NOTHING_MORE;
lpfc_els_rsp_reject(vport, stat.un.lsRjtError, cmdiocb, ndlp, NULL);
return ndlp->nlp_state;
}
static uint32_t
lpfc_rcv_logo_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
/* software abort outstanding PLOGI */
lpfc_els_abort(vport->phba, ndlp);
lpfc_rcv_logo(vport, ndlp, cmdiocb, ELS_CMD_LOGO);
return ndlp->nlp_state;
}
static uint32_t
lpfc_rcv_els_plogi_issue(struct lpfc_vport *vport, struct lpfc_nodelist *ndlp,
void *arg, uint32_t evt)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_hba *phba = vport->phba;
struct lpfc_iocbq *cmdiocb = (struct lpfc_iocbq *) arg;
/* software abort outstanding PLOGI */
lpfc_els_abort(phba, ndlp);
if (evt == NLP_EVT_RCV_LOGO) {
lpfc_els_rsp_acc(vport, ELS_CMD_ACC, cmdiocb, ndlp, NULL);
} else {
lpfc_issue_els_logo(vport, ndlp, 0);
}
/* Put ndlp in npr state set plogi timer for 1 sec */
mod_timer(&ndlp->nlp_delayfunc, jiffies + HZ * 1);
spin_lock_irq(shost->host_lock);
ndlp->nlp_flag |= NLP_DELAY_TMO;
spin_unlock_irq(shost->host_lock);
ndlp->nlp_last_elscmd = ELS_CMD_PLOGI;
ndlp->nlp_prev_state = NLP_STE_PLOGI_ISSUE;
lpfc_nlp_set_state(vport, ndlp, NLP_STE_NPR_NODE);
return ndlp->nlp_state;
}
static uint32_t
lpfc_cmpl_plogi_plogi_issue(struct lpfc_vport *vport,
struct lpfc_nodelist *ndlp,
void *arg,
uint32_t evt)
{
struct lpfc_hba *phba = vport->phba;
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
struct lpfc_iocbq *cmdiocb, *rspiocb;
struct lpfc_dmabuf *pcmd, *prsp, *mp;
uint32_t *lp;
IOCB_t *irsp;
struct serv_parm *sp;
LPFC_MBOXQ_t *mbox;
cmdiocb = (struct lpfc_iocbq *) arg;
rspiocb = cmdiocb->context_un.rsp_iocb;
if (ndlp->nlp_flag & NLP_ACC_REGLOGIN) {
/* Recovery from PLOGI collision logic */
return ndlp->nlp_state;
}
irsp = &rspiocb->iocb;
if (irsp->ulpStatus)
goto out;
pcmd = (struct lpfc_dmabuf *) cmdiocb->context2;
prsp = list_get_first(&pcmd->list, struct lpfc_dmabuf, list);
lp = (uint32_t *) prsp->virt;
sp = (struct serv_parm *) ((uint8_t *) lp + sizeof (uint32_t));
/* Some switches have FDMI servers returning 0 for WWN */
if ((ndlp->nlp_DID != FDMI_DID) &&
(wwn_to_u64(sp->portName.u.wwn) == 0 ||
wwn_to_u64(sp->nodeName.u.wwn) == 0)) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0142 PLOGI RSP: Invalid WWN.\n");
goto out;
}
if (!lpfc_check_sparm(vport, ndlp, sp, CLASS3, 0))
goto out;
/* PLOGI chkparm OK */
lpfc_printf_vlog(vport, KERN_INFO, LOG_ELS,
"0121 PLOGI chkparm OK Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_state,
ndlp->nlp_flag, ndlp->nlp_rpi);
if (vport->cfg_fcp_class == 2 && (sp->cls2.classValid))
ndlp->nlp_fcp_info |= CLASS2;
else
ndlp->nlp_fcp_info |= CLASS3;
ndlp->nlp_class_sup = 0;
if (sp->cls1.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS1;
if (sp->cls2.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS2;
if (sp->cls3.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS3;
if (sp->cls4.classValid)
ndlp->nlp_class_sup |= FC_COS_CLASS4;
ndlp->nlp_maxframe =
((sp->cmn.bbRcvSizeMsb & 0x0F) << 8) | sp->cmn.bbRcvSizeLsb;
mbox = mempool_alloc(phba->mbox_mem_pool, GFP_KERNEL);
if (!mbox) {
lpfc_printf_vlog(vport, KERN_ERR, LOG_ELS,
"0133 PLOGI: no memory for reg_login "
"Data: x%x x%x x%x x%x\n",
ndlp->nlp_DID, ndlp->nlp_state,
ndlp->nlp_flag, ndlp->nlp_rpi);
goto out;
}
lpfc_unreg_rpi(vport, ndlp);
if (lpfc_reg_rpi(phba, vport->vpi, irsp->un.elsreq64.remoteID,
(uint8_t *) sp, mbox, ndlp->nlp_rpi) == 0) {
switch (ndlp->nlp_DID) {
case NameServer_DID:
mbox->mbox_cmpl = lpfc_mbx_cmpl_ns_reg_login;
break;
case FDMI_DID:
mbox->mbox_cmpl = lpfc_mbx_cmpl_fdmi_reg_login;
break;
default:
ndlp->nlp_flag |= NLP_REG_LOGIN_SEND;
mbox->mbox_cmpl = lpfc_mbx_cmpl_reg_login;
}
mbox->context2 = lpfc_nlp_get(ndlp);
mbox->vport = vport;
if (lpfc_sli_issue_mbox(phba, mbox, MBX_NOWAIT)
!= MBX_NOT_FINISHED) {
lpfc_nlp_set_state(vport, ndlp,
NLP_STE_REG_LOGIN_ISSUE);
return ndlp->nlp_state;
}
if (ndlp->nlp_flag & NLP_REG_LOGIN_SEND)
ndlp->nlp_flag &= ~NLP_REG_LOGIN_SEND;
/* decrement node reference count to the failed mbox
* command
*/
lpfc_nlp_put(ndlp);
mp = (struct lpfc_dmabuf *) mbox->context1;
lpfc_mbuf_free(phba, mp->virt, mp->phys);
kfree(mp);